Proceedings of the 54th International Congress and Exposition on Noise Control Engineering

ACOUSTIC NEAR FIELD OF HV CAPACITOR CALCULATED FROM LASER VIBRATION MEASUREMENTS

Published in 25/09/2025 - ISBN: 978-65-272-1573-8

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Complete Paper Summary
Paper Title
ACOUSTIC NEAR FIELD OF HV CAPACITOR CALCULATED FROM LASER VIBRATION MEASUREMENTS
Authors
  • Michal Kozupa
  • Grzegorz Kmita
  • Piotr Ksiazek
  • Jadwiga Hyla
  • Hakan Rorvall
  • Bartosz Chmielewski
  • Pawel Nieradka
  • Jakub Joska
  • Matheus Veloso
Modality
Onsite-Oral
Subject area
03.1. Computational Methods & AI in Vibro-Acoustics
Publishing Date
25/09/2025
Country of Publishing
Brazil | Brasil
Language of Publishing
en-US
Paper Page
https://www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1073105-acoustic-near-field-of-hv-capacitor-calculated-from-laser-vibration-measurements
ISBN
978-65-272-1573-8
Keywords
HV capacitor, laser vibrometry, LDV, numerical simulations, FEM
Summary
This study presents a comprehensive methodology for calculating the acoustic near field of high-voltage (HV) capacitor using laser vibration measurements. Conducted in a semi-anechoic chamber with a Polytec Robovib system, the measurements involved over 14,000 discrete points on all radiating surfaces ensuring precise operational deflection shapes characterization. Utilizing 3D laser vibrometry (LV) scanning, the complex vibration velocities in all three spatial directions were meticulously measured on the capacitor surface. These velocities were then converted into normal velocity boundary conditions for finite element method (FEM) simulations aimed at accurately predicting near-field acoustic radiation. The point cloud data was imported into FEM software, which included a meshed sphere of acoustic elements to simulate acoustic propagation using real velocity vector excitations. The FEM model development was carried out using Comsol Multiphysics and Ansys Mechanical software, incorporating various empirical calculation approaches. This study provides a comparative analysis focusing on sound power levels, directivity plots, and the data post-processing efforts associated with each approach. The results include predictions of radiated power and directivity at frequencies of 50 Hz, 200 Hz, and 400 Hz.
Title of the Event
Inter-Noise 2025
City of the Event
São Paulo
Title of the Proceedings of the event
Proceedings of the 54th International Congress and Exposition on Noise Control Engineering
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

KOZUPA, Michal et al.. ACOUSTIC NEAR FIELD OF HV CAPACITOR CALCULATED FROM LASER VIBRATION MEASUREMENTS.. In: Proceedings of the 54th International Congress and Exposition on Noise Control Engineering. Anais...Sao Paulo(SP) WTC Events Center, 2025. Available in: https//www.even3.com.br/anais/international-congress-exposition-noise-control-engineering/1073105-ACOUSTIC-NEAR-FIELD-OF-HV-CAPACITOR-CALCULATED-FROM-LASER-VIBRATION-MEASUREMENTS. Access in: 30/01/2026

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